JPH08332727A - Ink jet recording head and apparatus - Google Patents

Ink jet recording head and apparatus

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Publication number
JPH08332727A
JPH08332727A JP13914295A JP13914295A JPH08332727A JP H08332727 A JPH08332727 A JP H08332727A JP 13914295 A JP13914295 A JP 13914295A JP 13914295 A JP13914295 A JP 13914295A JP H08332727 A JPH08332727 A JP H08332727A
Authority
JP
Japan
Prior art keywords
ink
orifice
heater
jet recording
ink jet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13914295A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Imanaka
Hiroyuki Ishinaga
Masaaki Izumida
Yuji Kamiyama
雄次 上山
良行 今仲
昌明 泉田
博之 石永
Original Assignee
Canon Inc
キヤノン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc, キヤノン株式会社 filed Critical Canon Inc
Priority to JP13914295A priority Critical patent/JPH08332727A/en
Publication of JPH08332727A publication Critical patent/JPH08332727A/en
Application status is Pending legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04533Control methods or devices therefor, e.g. driver circuits, control circuits controlling a head having several actuators per chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04563Control methods or devices therefor, e.g. driver circuits, control circuits detecting head temperature; Ink temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0458Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14016Structure of bubble jet print heads
    • B41J2/14032Structure of the pressure chamber
    • B41J2/14056Plural heating elements per ink chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14016Structure of bubble jet print heads
    • B41J2/14072Electrical connections, e.g. details on electrodes, connecting the chip to the outside...

Abstract

PURPOSE: To obtain an ink jet recording apparatus having gradation control function and excellent in recording grade.
CONSTITUTION: The heater being the electrothermal conversion element provided on an ink jet recording head and heating and foaming ink to emit the same from orifices has large and small heaters 3, 4 per one orifice 40 and the distance between the large heater 3 and the orifice 40 is larger than the distance between the small heater 4 and the orifice 40 and the large heater 3 can be selectively driven by electrode wiring 6 and the small heater 4 can be selectively driven by electrode wiring 7.
COPYRIGHT: (C)1996,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、電気信号の入力により記録媒体に向けてインクを吐出するインクジェット記録ヘッド、及びインクジェット記録ヘッドを装着し記録媒体に文字やイメージ画像等の記録を行うインクジェット記録装置に関するものである。 The present invention relates to an ink jet recording which performs ink jet recording head for discharging ink toward a recording medium in response to input of an electrical signal, and the recording of characters and images on a recording medium by mounting the ink jet recording head to an apparatus.

【0002】 [0002]

【従来の技術】計算機、ワードプロセッサ、ファクシミリ装置、複写装置、プリンター等、各種機器において、 BACKGROUND ART computer, a word processor, a facsimile apparatus, a copying apparatus, a printer or the like, in various devices,
用紙等の記録媒体に記録を行う手段として、騒音発生することがなく高速な記録が可能、しかもカラー画像の記録も容易なことからインクジェット記録装置が広く利用されつつある。 There as means for recording on a recording medium such as paper, can perform high-speed recording without generating noise, yet while the ink jet recording apparatus is widely used since the recording of a color image is also easy.

【0003】インクジェット記録装置に備えたインクジェット記録ヘッドは、インクジェット記録装置からの信号電流の入力により記録媒体に対向した位置からインクを吐出して記録媒体に文字やイメージ画像等の記録を行う部材であり、インクジェット記録装置からの信号電流により発生させた熱エネルギーによりインクを吐出させる構成となっている。 An inkjet printhead having the ink jet recording apparatus, a member for recording characters and images on a recording medium by ejecting ink from a position facing the recording medium by the input of the signal current from the ink jet recording apparatus There has a configuration for ejecting ink by thermal energy generated by a signal current from the ink jet recording apparatus.

【0004】図8はインクジェット記録ヘッドの模式斜視図、図9は同インクジェット記録ヘッドの模式断面図である。 [0004] Figure 8 is a schematic perspective view of an ink jet recording head, Fig. 9 is a schematic cross-sectional view of the ink jet recording head.

【0005】40はインクを吐出させる吐出口であるオリフィス、41は第1基板、41aはインクを加熱し発泡させるため第1基板41に設置された電気熱変換素子、42は第2基板、42aはインク流路、42bはインク室、42cはインク供給口である。 [0005] 40 orifices which are ejection openings for ejecting ink, the 41 first substrate, 41a ink heated the installed electrothermal converting element on the first substrate 41 for foaming, the 42 second substrate, 42a an ink flow path, 42b is the ink chamber, 42c is an ink supply port.

【0006】図示のように、第1基板41と第2基板4 [0006] As shown, the first substrate 41 second substrate 4
2を接合させてインク流路42a、インク室42bが形成され、インク供給口42cからインク室42bそしてインク流路42aにインクが供給され、インク流路42 2 is bonded to the ink flow path 42a, the ink chamber 42b is formed, ink is supplied to the ink chamber 42b and the ink flow path 42a from the ink supply port 42c, the ink flow path 42
a部分に備えた電気熱変換素子(以下、ヒーターという)41aはインクジェット記録装置の電流供給手段から供給される信号電流により発熱し、インク流路42a Electrothermal converting element provided in a portion (hereinafter, the heater referred) 41a is heated by the signal current supplied from the current supply means of the ink jet recording apparatus, an ink flow path 42a
内のインクを加熱発泡させ、この発泡によりインク流路42a内のインクをオリフィス40から記録媒体に向けて吐出させる構成となっている。 Ink is heated foamed inner, ink in the ink passages 42a has a configuration in which discharged toward the recording medium from an orifice 40 by the foam.

【0007】なお、インクジェット記録の濃度階調の制御のために、1つのオリフィスに対して複数のヒーターを設け、第1基板内に個々のヒーターに信号電気を供給する機能素子回路を設けて、個々のヒーターに信号電気を選択的に供給することによって、1画素に対して吐出するインク量を変えることにより記録画像に階調性を持たせることが可能な構成が知られている。 [0007] In order to control the density gradation of the ink jet recording, a plurality of heaters for one orifice provided with a functional element circuit for supplying a signal electric individual heater in the first substrate, by selectively supplying a signal electric individual heater structure capable to have a gradation it is known in the recorded image by changing the amount of ejected ink per pixel.

【0008】 [0008]

【発明が解決しようとする課題】しかしながら、従来の構成では、1つのオリフィスに対するインク流路(以下、ノズルという)内にヒーター面積が異なる複数のヒーターが並列に配置され、複数のヒーターを同時発泡させた時に吐出量,画品位が安定するオリフィスヒーター間距離にすると、小さな面積のヒーターを単独に駆動させる場合にはオリフィスヒーター間距離が長くなり過ぎるため、インクを吐出させるためのパワーが不足して液滴として吐出できない可能性がある。 [SUMMARY OF THE INVENTION However, in the conventional structure, the ink flow path for one orifice (hereinafter referred to as nozzle) Heating area in the plurality of different heaters are arranged in parallel, simultaneous foaming a plurality of heaters discharge amount when is, the image quality is the distance between the orifice heater for stable, because the too long distance between the orifices heater when driving the heaters small area alone, the power is insufficient for ejecting ink it may not be discharged as Te droplets. 従って、1ノズル内の最小の面積をもつヒーターは安定した吐出は行なえず、階調性が不安定になり、印字品位が劣化する。 Therefore, the heater having the smallest area within 1 nozzle not perform a stable ejection, gradation becomes unstable, the printing quality is degraded.

【0009】本発明は、上記従来の問題点を解消するために成されたもので、階調性の制御機能を持たせた、記録品位が優れるインクジェット記録ヘッド及びインクジェット記録装置の提供を目的とするものである。 [0009] The present invention has been made to solve the above problems, and aims to provide a gave tonality control functions, an ink jet recording head and an ink jet recording apparatus in which the recording quality is excellent it is intended to.

【0010】 [0010]

【課題を解決するための手段】このため、本発明に係るインクジェット記録ヘッドは、インクを吐出するオリフィスにインクを送る吐出口形成部と、電気信号入力により熱エネルギーを発生し前記吐出口形成部内のインクを加熱発泡させ前記オリフィスから吐出させる電気熱変換素子が設けられた基板とを備えたインクジェット記録ヘッドであって、前記電気熱変換素子は、1つのオリフィスからインクを吐出させる吐出口形成部内に、個別に電気信号入力して駆動可能な複数の前記電気熱変換素子がオリフィスからの距離を異ならせて設けられていることを特徴とする構成によって、、また、前記1つのオリフィスからインクを吐出させる吐出口形成部内に設けられている複数の電気熱変換素子は、インクを加熱させる面積が互いに異なっ [SUMMARY OF To this end, the ink jet recording head according to the present invention includes a discharge port forming portion for sending ink to the orifice for discharging ink, the discharge port forming portion of the heat energy generated by the electrical signal input an inkjet recording head electrothermal transducer to eject from the orifice and a board provided in the ink is a heat-foamable, said electrothermal converting element, the discharge port forming portion for ejecting the ink from one orifice a, ,, also by the structure wherein the individual electrical signal input to drivable plurality of said electrothermal converting elements are provided at different distances from the orifice, the ink from the one orifice a plurality of electrothermal converting element provided on the discharge port formation portion for discharging the different from each other in area to heat the ink いることを特徴とする構成によって、前記の目的を達成しようとするものである。 With the configuration, characterized in that there is intended to achieve the above object.

【0011】本発明に係るインクジェット記録装置は、 [0011] inkjet recording apparatus according to the present invention,
前記のインクジェット記録ヘッドを備え、前記1つのオリフィスからインクを吐出させる吐出口形成部に設けられている複数の電気熱変換素子を選択して駆動し記録媒体にインクを吐出して記録を行うことを特徴とする構成によって、前記の目的を達成しようとするものである。 It provided with the ink jet recording head, to perform printing by discharging ink to the one selected multiple electrothermal converting element provided on the discharge port formation portion to eject ink from the orifice by driving the recording medium the configuration according to claim is intended to achieve the above object.

【0012】 [0012]

【作用】上記構成により、1ノズル内に互に面積の異なる複数のヒーターを安定して吐出できるオリフィスヒーター間距離に配置することにより、複数のヒーターの面積が異なっても安定した吐出が行なえるため、1画素当りの打ち込むインク量を安定的に変えることが可能となり、高品位な階調性をもたせることができる。 By the action above construction, by arranging the distance between the orifice heaters multiple heaters each other with different areas in one nozzle capable of discharging stably, enables ejection area of ​​the plurality of heaters stable even different Therefore, it is possible to vary the amount of ink implanted with per pixel stably, it is possible to have a high-quality gradation.

【0013】 [0013]

【実施例】本発明に係るインクジェット記録ヘッド及びインクジェット記録装置を実施例により説明する。 BRIEF DESCRIPTION by the ink jet recording head and an ink jet recording apparatus according to the present invention embodiment.

【0014】本発明の実施例は、前記従来のインクジェット記録ヘッドに準じた構成を備え、インクジェット記録装置の電流供給手段からインクジェット記録ヘッドに供給される電気信号により電気熱変換素子は発熱し、インク流路内のインクを加熱発泡させ、この発泡によりインク流路内のインクを記録媒体に対向した位置にあるオリフィス(インク吐出口)から記録媒体に向けて吐出し、文字やイメージ画像等の記録を行う構成となっている。 Example of [0014] the present invention, the a structure in accordance with the conventional ink jet recording head, the electrothermal converting element by an electric signal supplied to the ink jet recording head from the current supply means of the ink jet recording apparatus to generate heat, ink was heated foamed ink in the flow path, discharge toward a recording medium from an orifice (ink ejection ports) that this foaming at a position opposed to the ink in the ink passages in the recording medium, the recording of characters and images and it has a configuration to perform.

【0015】そして、実施例は、1つのオリフィスに対して複数の電気熱変換素子を有しており、高品位な記録の制御ができることに特徴を有しており、以下実施例の特徴ある構成、効果について詳しく説明する。 [0015] Then, embodiment has a plurality of electrothermal converting elements with respect to one orifice has a feature in that it is controlled high-quality recording, certain features of the following examples structure , it will be described in detail effect.

【0016】(実施例1)図1は本発明の実施例1であるインクジェット記録ヘッドの基板上の電気熱変換素子の配置を示す模式図であり、図2は実施例1の電気熱変換素子の電極配線を示す模式図である。 [0016] (Embodiment 1) FIG. 1 is a schematic view showing the arrangement of electrothermal converting elements on a substrate of an ink jet recording head according to a first embodiment of the present invention, an electrothermal conversion element in FIG. 2 of Example 1 it is a schematic view showing the electrode wires.

【0017】ノズル壁5の間の1個の吐出ノズル内には大ヒーター3と小ヒーター4の2つのヒーターがオリフィス40への距離を異ならせて配置してある。 [0017] The one discharge nozzle between the nozzle walls 5 are disposed two heaters with large heater 3 small heater 4 by varying the distance to the orifice 40. それぞれのヒーター3,4はスルーホール2を介してヒーターの下層の層間絶縁膜下にあるコモン配線1と接続されており、このコモン配線1より電圧を印加される。 Each heater 3 and 4 is connected to the common wiring 1 that through the through hole 2 under the lower interlayer insulating film of the heater, a voltage is applied from the common wiring 1.

【0018】配線6,7は、それぞれ大ヒーター3,小ヒーター4とスイッチングトランジスタ10,11とにスルーホール16を介して接続される。 The wires 6 and 7, respectively large heater 3 are connected through the through hole 16 in the small heater 4 and the switching transistors 10 and 11. スイッチングトランジスタ10,11もヒーター下層の層間絶縁膜下に配置される。 Switching transistors 10 and 11 are also placed under the heater lower interlayer insulating film. さらにトランジスタ10,11のON,O In addition ON of the transistors 10,11, O
FFを制御する為、信号配線17,18がトランジスタ10,11とシフトレジスタ・ラッチ回路19,20に接続してある。 For controlling the FF, the signal lines 17 and 18 are connected to the transistors 10 and 11 and the shift register latch circuits 19 and 20.

【0019】上記構成により、ヒーターの駆動データをシフトレジスタ・ラッチ回路19,20で取り込んでトランジスタ10,11をON,OFFさせ制御する。 [0019] With the above configuration, ON the transistors 10 and 11 takes in the drive data heaters shift register latch circuits 19 and 20, is OFF control. またグランド配線12,13,14,15はそれぞれのスイッチングトランジスタ8,9,10,11のエミッタに接続されている。 The ground wire 12, 13, 14 and 15 are connected to the emitters of the switching transistors 8, 9, 10 and 11.

【0020】図3は実施例1の基板全体の構成を示す模式図である。 [0020] FIG. 3 is a schematic diagram showing the configuration of the entire substrate of Example 1.

【0021】基板23は、図1,図2に示すコモン配線1を構成するセル25の連続配置で構成される。 The substrate 23 includes a continuous arrangement of the cells 25 constituting the Figure 1, the common wiring 1 shown in FIG. コモン配線1はコモン縦配線23により接点24に接続され、 Common wiring 1 is connected to the contact 24 by the common vertical line 23,
外部電源からの供給を受ける。 It receives a supply from an external power source. グランド配線12,1 Ground wiring 12, 1
3,14,15はグランド縦配線21により接点24に接続される。 3,14,15 is connected to the contact 24 by the ground vertical line 21.

【0022】図1,図2,図3に示す構成の等価回路を図4,図5に示す。 [0022] FIGS. 1, 2, 4 an equivalent circuit of the configuration shown in FIG. 3, shown in FIG.

【0023】図4ではシフトレジスタ・ラッチ回路1 [0023] In FIG. 4 shift register latch circuit 1
9,20を詳細に示してある。 It is shown in detail 9, 20. シフトレジスタ36にはクロック信号線37とシリアルデータ線35が接続され、シリアルデータをクロック信号によりデータをシフトレジスタ36に転送する。 A clock signal line 37 and the serial data line 35 is connected to the shift register 36, and transfers the serial data to the shift register 36 the data by the clock signal. シフトレジスタ36に入力されたデータはラッチ33にラッチ信号線34からのラッチ信号で保持される。 Data input to the shift register 36 is held by the latch signal from the latch signal line 34 to the latch 33. 次にイネーブル信号32はAN Then enable signal 32 AN
Dゲート31に接続され、ラッチ33のデータをトランジスタ11に印加する為のタイミング信号を入力する。 Is connected to the D gate 31, and inputs the timing signal for applying the data latch 33 to the transistor 11.
イネーブル信号32が2本ある為、ヒーター3,4は同時でもタイミングをずらしても駆動可能である。 Since the enable signal 32 is two, the heater 3 and 4 can be driven even also different timings in the same time.

【0024】図5は、図4に示すセルを連続配置した基板23の全体構成の等価回路図である。 FIG. 5 is an equivalent circuit diagram of the overall configuration of a substrate 23 that the cell consecutive arrangement shown in FIG.

【0025】図5にデコーダ38とデコーダ信号線39 The decoder 38 in FIG. 5 and a decoder signal line 39
が示してあるが、これは駆動タイミングを多様に制御する為のもので、イネーブル信号32を複数持たず少ない接点で多くのタイミングを駆動させられるものである。 Although is shown, which is intended for variously controlling the driving timing, it is intended to be driven many timing with less contact have no more than two enable signals 32.
これらの基本的なタイミングチャートを図6に示す。 These basic timing chart shown in FIG.

【0026】次に、この基板23を用いたインクの吐出量の安定制御を説明する。 Next, explaining the stability and the ejection amount of ink using the substrate 23.

【0027】ノズル壁5に挾まれた吐出ノズルにはインクが満たされており、大ヒーター3,小ヒーター4を加熱し発泡させると、発泡圧力によりオリフィス40よりインクが吐出される。 [0027] The discharge nozzle sandwiched nozzle wall 5 has been filled with ink, the large heater 3, the foaming by heating the small heater 4, the ink is ejected from the orifice 40 by the foaming pressure.

【0028】しかし、一般に大きなヒーターの場合は、 [0028] In general, however, the case of a large heater,
ヒーター/オリフィス間距離を短くし過ぎると吐出しようとするインク量に対し、ヒータ/オリフィス間にあるインクが不足して、かすれた記録になったりする。 To the ink amount to be discharged and too short between the heater / orifice distance, the lack of ink in between the heater / orifice, or become blurred recording. また、小さなヒーターの場合には、ヒーター/オリフィス間距離を長くし過ぎるとヒータ/オリフィス間のインク粘性抵抗に対し、吐出する為の発泡力が不足して液滴として吐出されないことも有り得る。 In the case of small heater it is too long a distance between the heater / orifice to the ink viscosity resistance between the heater / orifice, also possible that foaming power for discharging is not ejected as droplets insufficient.

【0029】そこで、大ヒーター3と小ヒーター4のオリフィス/ヒーター間距離を各々吐出が安定する距離に設定し、しかも大ヒーター3と小ヒーター4が同時発泡しても階調性を出させることができるオリフィス/ヒーター間距離に設定することで、大ヒーター3,小ヒーター4を各々に駆動させても同時に駆動させても安定した吐出量が得られるので、例えばヒーターをx種類設けることにより、高品位な2 x階調が実現できる。 [0029] Therefore, the large heater 3 each discharging orifice / heater distance of the small heater 4 is set to a distance of stable and large heater 3 and the small heater 4 is also to issue a gradation co foam by setting the distance between the orifice / heater can, large heater 3, since the amount of discharge was stable even driven simultaneously by driving each small heater 4 is obtained, for example, by a heater x type provided, high-quality 2 x gradation can be realized.

【0030】(実施例2)図7は実施例2の電気熱変換素子(ヒーター)の配置を示す模式図である。 [0030] (Embodiment 2) FIG. 7 is a schematic view showing the arrangement of electrothermal conversion element of Example 2 (heater).

【0031】実施例2では、大ヒーター3と小ヒーター4を直列に配置してあることにより、大ヒーター3と小ヒーター4によるインク発泡の中心がノズル中心で発生する為、インクを吐出させる為の発泡が効率的に行なわれる。 [0031] In Example 2, by are arranged a large heater 3 small heater 4 in series, since the center of the ink foaming the large heater 3 by small heater 4 is generated at the nozzle center, for ejecting ink foaming is effectively performed. そして大ヒーター3と小ヒーター4を各吐出量が安定する距離に設定することで高品位な階調制御が可能である。 And each ejection amount large heater 3 small heater 4 is capable of high-quality gradation control by setting the distance to be stable.

【0032】(他の実施例)本発明に係るインクジェット記録装置の実施例は、前記実施例1または実施例2のインクジェット記録ヘッドを装着し、画像信号に基づいてインク吐出口からインクを吐出させて記録媒体に文字・画像等の記録を行う構成を備えており、前記実施例での説明のように、大・小の電気熱変換素子の選択駆動により、高品位な階調制御をして記録することができる。 Example of [0032] inkjet recording apparatus according to (another embodiment) the present invention, the ink jet recording head of Example 1 or Example 2 is attached, by ejecting ink from an ink discharge port on the basis of an image signal It has a structure for recording such as character-image on a recording medium Te, as described in the above embodiment, by selectively driving a large and small of the electrothermal converting element, and a high quality gray scale control it can be recorded.

【0033】 [0033]

【発明の効果】以上説明したように、本発明によれば、 As described in the foregoing, according to the present invention,
1ノズル内に設ける複数の面積が異なるヒーターに対して安定的な吐出ができるオリフィス/ヒーター間距離を個々のヒーターに設定したことで、高品位な画像階調制御が可能となる。 By multiple areas provided in one nozzle set between orifice / heater can stable discharge for different heater distances to individual heaters, it is possible to high-quality image gradation control.

【0034】そして、データのパッド数を増やすことなく階調制御が可能となり、パッド数が増えないのでコンタクトの信頼性が上がるので、階調性が安定し印字品位の優れたインクジェット記録ヘッドおよびインクジェット記録装置を提供することができる。 [0034] Then, it is possible to gradation control without increasing the number of pads data, because since the number of pads does not increase the reliability of the contact is increased, the ink jet recording head and ink jet tonality excellent stable printing quality it is possible to provide a recording apparatus.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】 実施例1のヒーター配置を示す模式図である。 1 is a schematic diagram illustrating a heater arrangement of the first embodiment.

【図2】 実施例1の駆動部を示す模式図である。 2 is a schematic view showing a driving unit of the first embodiment.

【図3】 実施例1の基板上の駆動部の配置図である。 3 is a layout view of a driving unit on the substrate of Example 1.

【図4】 実施例1のヒーターを駆動させる等価回路図である。 Figure 4 is an equivalent circuit diagram for driving the heater of Example 1.

【図5】 実施例1のヒーターを駆動させる等価回路図である。 Figure 5 is an equivalent circuit diagram for driving the heater of Example 1.

【図6】 実施例1の駆動タイミングチャートである。 6 is a drive timing chart of the first embodiment.

【図7】 実施例2のヒーター配置を示す模式図である。 7 is a schematic diagram illustrating a heater arrangement of the second embodiment.

【図8】 従来のインクジェット記録ヘッドの模式斜視図である。 8 is a schematic perspective view of a conventional ink jet recording head.

【図9】 従来のインクジェット記録ヘッドの模式断面図である。 9 is a schematic cross-sectional view of a conventional ink jet recording head.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 コモン配線 2 スルーホール 3 大ヒーター 4 小ヒーター 5 ノズル壁 6,7 電極配線 8,9,10,11 スイッチングトランジスタ 12,13,14,15 グランド配線 17,18 信号配線 19,20 シフトレジスタ・ラッチ回路 23 基板 40 オリフィス 1 common wiring 2 through holes 3 large heater 4 small heater 5 nozzle wall 6,7 electrode wiring 8,9,10,11 switching transistors 12, 13, 14, 15 ground line 17 signal line 19, 20 shift register latches circuit 23 board 40 orifices

───────────────────────────────────────────────────── フロントページの続き (72)発明者 今仲 良行 東京都大田区下丸子3丁目30番2号 キヤ ノン株式会社内 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor now Yoshiyuki Naka Ota-ku, Tokyo Shimomaruko 3-chome No. 30 No. 2 Canon within Co., Ltd.

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 インクを吐出するオリフィスにインクを送る吐出口形成部と、電気信号入力により熱エネルギーを発生し前記吐出口形成部内のインクを加熱発泡させ前記オリフィスから吐出させる電気熱変換素子が設けられた基板とを備えたインクジェット記録ヘッドであって、 前記電気熱変換素子は、1つのオリフィスからインクを吐出させる吐出口形成部内に、個別に電気信号入力して駆動可能な複数の前記電気熱変換素子がオリフィスからの距離を異ならせて設けられていることを特徴とするインクジェット記録ヘッド。 And 1. A ink discharge port forming portion for sending ink to the orifice for discharging the electrothermal converting element to the ink in the thermal energy generated said discharge port forming portion is heat-foamable ejected from the orifice by an electrical signal input an inkjet printhead having a substrate provided, wherein the electrothermal converting element, the discharge port forming portion to eject ink from the one orifice, the individual electrical signals input to drivable plurality of said electrical an ink jet recording head is characterized in that the heat conversion elements are provided at different distances from the orifice.
  2. 【請求項2】 前記1つのオリフィスからインクを吐出させる吐出口形成部に設けられている複数の電気熱変換素子は、インクを加熱させる面積が互いに異なっていることを特徴とする請求項1記載のインクジェット記録ヘッド。 2. A plurality of electrothermal converting element provided on the discharge port formation portion for discharging the ink from the one orifice, according to claim 1, characterized in that the area for heating ink are different from each other the ink-jet recording head.
  3. 【請求項3】 前記請求項1または2に記載のインクジェット記録ヘッドを備え、前記1つのオリフィスからインクを吐出させる吐出口形成部に設けられている複数の電気熱変換素子を選択して駆動し記録媒体にインクを吐出して記録を行うことを特徴とするインクジェット記録装置。 3. A comprising an ink jet recording head according to claim 1 or 2, wherein one ink by driving select multiple electrothermal converting element provided on the discharge port formation portion for discharging from the orifice ink jet recording apparatus and performs recording by ejecting ink onto a recording medium.
JP13914295A 1995-06-06 1995-06-06 Ink jet recording head and apparatus Pending JPH08332727A (en)

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JP13914295A JPH08332727A (en) 1995-06-06 1995-06-06 Ink jet recording head and apparatus
DE69628234T DE69628234T2 (en) 1995-06-06 1996-06-05 Ink jet head, ink jet device and ink jet recording method
DE1996628234 DE69628234D1 (en) 1995-06-06 1996-06-05 Ink jet head, ink jet device and ink jet recording method
EP96109037A EP0747221B1 (en) 1995-06-06 1996-06-05 Ink jet head, ink jet apparatus and ink jet recording method
US08/659,324 US6003973A (en) 1995-06-06 1996-06-06 Ink jet head, apparatus and method having individually-drivable heat generating resistors variably spaced from an electric outlet
US09/383,925 US6382772B1 (en) 1995-06-06 1999-08-26 Ink jet head, apparatus and method having individually-drivable heat generating resistors variably spaced from an ejection outlet

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179411B1 (en) 1997-09-11 2001-01-30 Canon Kabushiki Kaisha Ink jet recording head and an ink jet recording apparatus
US6457796B1 (en) 1999-06-23 2002-10-01 Fuji Xerox Co., Ltd. Ink jet recording head and printing system using same

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08332727A (en) * 1995-06-06 1996-12-17 Canon Inc Ink jet recording head and apparatus
JP3559647B2 (en) * 1996-04-22 2004-09-02 キヤノン株式会社 Ink jet recording head, ink jet head cartridge and ink jet recording apparatus
EP0816089B1 (en) * 1996-06-26 2003-09-17 Canon Kabushiki Kaisha Ink-jet recording head and ink-jet recording apparatus
EP0816091B1 (en) * 1996-06-28 2005-04-20 Canon Kabushiki Kaisha Method for driving a recording head having a plurality of heaters arranged in each nozzle
JP3501619B2 (en) * 1997-05-07 2004-03-02 キヤノン株式会社 Inkjet recording head
EP1000745A3 (en) 1998-10-27 2001-01-24 Canon Kabushiki Kaisha Electro-thermal conversion device board, ink-jet recording head provided with the electro-thermal conversion device board, ink-jet recording apparatus using the same, and production method of ink-jet recording head
US6137502A (en) * 1999-08-27 2000-10-24 Lexmark International, Inc. Dual droplet size printhead
US6527378B2 (en) * 2001-04-20 2003-03-04 Hewlett-Packard Company Thermal ink jet defect tolerant resistor design
JP2003054004A (en) * 2001-08-10 2003-02-26 Canon Inc Ink jet recorder, ink jet recording head and ink jet recording method
CN100378551C (en) * 2001-10-22 2008-04-02 三星电子株式会社 Liquid crystal display and its manufacture method
JP3605102B2 (en) * 2002-07-18 2004-12-22 キヤノン株式会社 Liquid mixing device
US6729715B2 (en) 2002-08-14 2004-05-04 Hewlett-Packard Development Company, L.P. Fluid ejection
TWI267446B (en) * 2003-11-06 2006-12-01 Canon Kk Printhead substrate, printhead using the substrate, head cartridge including the printhead, method of driving the printhead, and printing apparatus using the printhead
US7344218B2 (en) * 2003-11-06 2008-03-18 Canon Kabushiki Kaisha Printhead driving method, printhead substrate, printhead, head cartridge and printing apparatus
KR100938943B1 (en) * 2004-11-10 2010-01-26 캐논 가부시끼가이샤 Liquid discharge head
JP4614388B2 (en) * 2005-04-01 2011-01-19 キヤノン株式会社 Recording apparatus, recording head, and driving method thereof
JP5197178B2 (en) * 2007-06-27 2013-05-15 キヤノン株式会社 Inkjet recording head substrate and inkjet recording head
JP5393596B2 (en) 2010-05-31 2014-01-22 キヤノン株式会社 Inkjet recording device

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1127227A (en) * 1977-10-03 1982-07-06 Ichiro Endo Liquid jet recording process and apparatus therefor
JPS5936879B2 (en) * 1977-10-14 1984-09-06 Canon Kk
US4330787A (en) * 1978-10-31 1982-05-18 Canon Kabushiki Kaisha Liquid jet recording device
US4345262A (en) * 1979-02-19 1982-08-17 Canon Kabushiki Kaisha Ink jet recording method
AU531269B2 (en) * 1979-03-06 1983-08-18 Canon Kabushiki Kaisha Ink jet printer
US4463359A (en) * 1979-04-02 1984-07-31 Canon Kabushiki Kaisha Droplet generating method and apparatus thereof
JPS6248585B2 (en) * 1979-04-02 1987-10-14 Canon Kk
US4313124A (en) * 1979-05-18 1982-01-26 Canon Kabushiki Kaisha Liquid jet recording process and liquid jet recording head
US4558333A (en) * 1981-07-09 1985-12-10 Canon Kabushiki Kaisha Liquid jet recording head
DE3326557C2 (en) * 1982-07-23 1992-02-06 Canon K.K., Tokio/Tokyo, Jp
JPS59138461A (en) * 1983-01-28 1984-08-08 Canon Inc Liquid jet recording apparatus
JPH0152187B2 (en) * 1983-09-28 1989-11-08 Keiichi Hori
US4965594A (en) * 1986-02-28 1990-10-23 Canon Kabushiki Kaisha Liquid jet recording head with laminated heat resistive layers on a support member
JP2713721B2 (en) * 1988-03-17 1998-02-16 株式会社リコー The liquid jet recording method
US5121143A (en) * 1988-09-14 1992-06-09 Graphtec Corp. Ink printing head with variable-size heat elements
EP0372097A1 (en) * 1988-11-30 1990-06-13 Siemens Aktiengesellschaft Arrangement for producing varying size ink droplets in an ink jet printer
JP2836749B2 (en) * 1989-05-09 1998-12-14 株式会社リコー Liquid jet recording head
US5148192A (en) * 1989-09-18 1992-09-15 Canon Kabushiki Kaisha Liquid jet recording head with nonlinear liquid passages and liquid jet recording apparatus having same
JP3127646B2 (en) * 1993-01-07 2001-01-29 富士ゼロックス株式会社 An ink jet recording apparatus
JP3715696B2 (en) * 1994-10-20 2005-11-09 キヤノン株式会社 Liquid discharge head, head cartridge, and liquid discharge apparatus
JPH08118641A (en) * 1994-10-20 1996-05-14 Canon Inc Ink jet head, ink jet head cartridge, ink jet device and ink container for ink jet head cartridge into which ink is re-injected
JPH08332727A (en) * 1995-06-06 1996-12-17 Canon Inc Ink jet recording head and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179411B1 (en) 1997-09-11 2001-01-30 Canon Kabushiki Kaisha Ink jet recording head and an ink jet recording apparatus
US6457796B1 (en) 1999-06-23 2002-10-01 Fuji Xerox Co., Ltd. Ink jet recording head and printing system using same

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US6382772B1 (en) 2002-05-07
EP0747221A3 (en) 1997-09-17
EP0747221B1 (en) 2003-05-21
DE69628234T2 (en) 2004-04-08
US6003973A (en) 1999-12-21
DE69628234D1 (en) 2003-06-26

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